Histology Flashcards
what are teh 3 layes of blood vessels
tunica externia, tunica media, tunia intima
what is in tunica intiam
endothelum, coneetic tissue
what is in tunica media
musle, elastic tissue
what is in tunca exertna
fiours connective tissue
what type of epitheluim is endocardium
simple squamous
what connects myoctes toguh in myocardium
intercollated discs
is myocardium striated or smooth and why
striated due to lots of mitocoinea
how many nucli do myocaridal cells have
1
what are teh 3 types of arteris
elastic, muscular, arterioles
what is differnt about elastic arters
they have elastic, blck t. media
what is a specil feratu of muclar arties
thcik t media, has smotth msule cells but no elasic laminae
elastic fibesr concentraed into 2 well defined layers, the internal elastic lamina under th pitelium and exeral elasti lamia
what is the differn in arteriol and arterys
no t. adventita
no interla elasti lamina or exernal elastic lamina
only 1-2 layers o fsmooth musle in t. media
wher is the exertal elastic laminae found
between tunica media and tunica adventia
how do capiler differ from arter
no t. media. no t. advntia
no elasti lamina
perictyes
very thin t. iniia
what are perictyes
incomplre layer o cells surronding cappilary, have contractile properties which control blood flow
what are the 3 types of capilare
fensetated, continus, discontiues
wher are contiues cappilers found
musle
wher are fenestred capilres found
endocrine or rena
what are sinusoids
large diamer type of disocunes capillareis, found wher large ammounts of exchange takes place,
what cells do sinusoids have
phagocytic
what is the fuction of arteriovenous shungts
thermoreguation, by pass capillery bed
how to vein and vessels differ to arteries
thin t.intima, media, and advetia.
larger less round, more irregular lumen
what layer forms the valves in veins
t. intima
what is the difference between superfical and deep valves
superfical - thick walled, no srround support
deep
thin wall
surrouign support form deep fasica and mules
superfical veins drain into deep veins
what are lympatic drainage collectio poins int he air
subclavin veis
how to tell differ betwen lymph capler and vein
there is no rbc in lypmh cappilers
what ancors lymph to surroundign ties
fine collagenous filamets
what is vasvasum
blood supply to certain vesses
what layer of vessle can lymp supply
t. advetisa
what layer of vese is vas vasrum
t. adventiata
